Scaffold-tie.



THE NORRIS PETERS I). P. JONES.

SGAFFOLD TIE.

APPLICATION rum) APB-.19, 1913.

CO.. PHO'lU-LITHCL. WASHINGTON, D4 04 Patented Aug. 18, 1914.

UNITED STATES P E T OFFICE.

'DANIEL PALMER JONES, or LONDON, ENGLAND, .ASSIGNOR To THE ra'rnn rfflnarin SCAFFOLD TIE COMPANY LIMITED, or Lennon, ENGLAND.

scAFmtD-TIE.

Specification of Letters Patent.

: P te ted 1 s, 1914.

Application filed April 19, 1913. Serial No. 762,355.

This invention relatesto a levice for binding or connecting together scaflold poles ot the kind referred to the specification of our 'Britishlietters Patent No. 24936 ()i .1907 and has for its object to modify the 4'0 section taken on aline above the part 4.

device at present in use with a view to extending its range of application. i

T he principal characteristic of the device described and shown in. my above prior specification consists in the provision of two Now in contra-distinction to the previous construction the device according to the present invention although constructed on substantially similar lines as the device now actually in use, is provided with two distinct hook members or chain carriers so that each chain may be applied to a rfliflerent carrier and the tractional forces on the chains in tlghtenlng may be caused on the contrivance to act in opposition to one another, as will be hereinafter more fully described with reference to the accompanying drawings, in which:

Figure 1 shows a sectional View of our improved scafl'olding tie in somewhat reduced size. Fig. 2 is a top plan view in partial cross section and Fig. 3 a view of a provided with two hooksi. This chain carrier may or may not be provided on its an derside with a spike or pin 4, adapted to be driven into one of the poles to which the device is "to be applied if desired and with a guideportion, or plate lfi nvliicli may be either integral with this carrier-or separately screwed on the bolt, for instance, by means of a threadedfring portiona and adapted to protect. the pole againstf the scraping action of the adjacentfnietal parts. Arranged on the screw bolt 1 isua nutto having a flange 6 which is adapted to cau v the second chain carrier. or hooked plate i7.

This plate T is providedavith twohooks 18, pre'terably (it oppositeconfiguration to those arranged on the plate. 2.? l\ ll()1'GOVl .i.t-l1lS plate .7 is, by preference, loosely rotatable on the nut 5, as hitherto, andin :OrdQlatO reduce friction between the plate and the nut, ball bearings!) or other anti friction device may be interposed between suitable surct'aces arranged on the two members respectively, although the interposition of anti friction means .is not in practice absolutely necessary. Further, a spring washer S)? or; other elastic cuslnomng unednun is preferably interposed between the two members 5 and 7 alone or with an intermediate washer 9 1n the case in which ball bearings are used at the same time, for the purpose of equalizing any inequalities in the strain.

from sliding oil the nut 5, a washer 10 is sprung into the cavity in the plate The-Y neath the flange (3, but of course any other suitable means may be employed for this purpose.

This construction has the advantage of enabling the coutrivance tobe used conveniently on top of each horizontal pole in scaffolding and to be fixed. if desired, on top or beneath a horizontal pole to the vertical pole, as clearly shown in Figs. 4% and 5, whereby on the one hand. it does not protrude from the horizontal pole where it is liable to be knocked against and disturbed in its position and on the other hand,that is to say, where it is arranged beneath the horizontal pole, it is protected by that pole from the influence of rain and the like. As shown in these figures, after the horizontal pole 11 is placed against the vertical pole 12, in the usual manner, such as by means of a temporary bracket, not shown, the tie 1 is placed either on top of the horizontal pole loosely or driven into the vertical pole, which latter operation, however, is only necessary in the event of the tie being fixed beneath the horizontal pole, after which one chain 13 is placed around the vertical pole and hooked on to the hooks 3 of the chain-carrier 2. The second chain 14, in the example illustrated, is then placed around the vertical pole and its ends are drawn over the horizontal pole, as shown, and hooked on to the hooks 8 of the second chain carrier 7. means of a wrench or other suitable tool, the nut 5 is then turned so as -to move toward the chain carrier 2, inwhi'ch operation the chain carrier 7 is moved in the same direction, thus tighteniw the chain 14, whereby;

at'the same tiinea pull is exerted in opposite direction on the chain 13 and both chains, therefore, are simult. i'eously tight: ened and the two poles securely bound to gethera The same action would be obtained if the tie were fixed beneath the horizontal pole, in which case thespike at which is used only as-a temporary fixture may, of course,

be. ultimately withdrawn from the pole by the .pull exerted on the chain acting on the chain-carrier 2, as will. be readily understood by looking upon Figs. 4 and :3 in a. reverse position.

It IS'Of course obvious that elther chain- Copies '0'? this patent may be obtained for carrier may be provided with more than two hooks and that the shape of these hooks and their position on the carrier may be varied at will and according to circumstances, without departing' from the spirit of the invention.

V hat I claim and desire to secure by Letters Patent is g 1. In a scaffold tie, a screw carrier integral therewith, an adjustable chain carrier on said rod, a chain for securing the integral chain carrier to one scaffold member, and a second chain :tor clamping a second scaffold member to the first, said chain carrier *being adapted to maintain the second chain in its clamping position.

2. In a scaffold tie, a screw rod, means-for securing-said. rod to aisca old member-5:1. chain carrier on said rod, a chain on said carrier for clamping a second scaffold 1ne1n' her to the first, and a projecting .device comprising a ring upon said rod, and a plate carried by said ring at right angles thereto and extending 'toprotectthe second sczniold member from said chain carrier.

In testimony whereof I have ailixed my signature in presence of two witnesses.

DANIEL PALE TER- J'Qlllltl. lVitnesses V i THOMAS Kiz'nsoN, C. Corn.

five cents each, by addressing the Commissioner of Patents, Washington, D. G.

rod, a chain 

